Hello there. I see you want to correct your e-filed 1099 in QuickBooks Online. I've got you! Here are some information and guidelines to help you achieve this.
In QuickBooks Online, you can only submit your 1099 form once. However, as of the moment, the instructions on how to file the amendment are not yet available. You can check it at a later time. If you need to make updates or corrections, you can do it through a printed copy and send it manually by mail to the IRS.
I'm adding these articles you can use in the future: